1. Selective scalable secret image sharing with adaptive pixel-embedding technique
Source：Multimedia Tools and Applications, Vol. 77, No. 20, pp , Oct
Authors： Jung-San Lee, Ying-Chin Chen, Hong-Chi Su
Speaker：Yun-Hao Hsieh
Date：2018/7/11

2. Outline Introduction Preliminaries Proposed mechanism
Experimental results and analysis
Conclusions

3. Introduction(1/2) – (t, n) threshold
(3, 5)
(4, 5)

4. Introduction(2/2) – Secret image sharing
Cover image
Result of shadows
3 shadows
(3, 5)
4 shadows
5 shadows

5. Preliminaries(1/5) – Scalable secret image sharing
Cover image
Result of shadows
(3, 5)
3 shadows
4 shadows
(3, 5)
(4, 5)
(5, 5)
5 shadows

6. Preliminaries(2/5) – Selective scalable secret image sharing
Cover image
Result of shadows
(3, 5)
3 shadows
4 shadows
(3, 5)
(4, 5)
(5, 5)
5 shadows

7. Preliminaries(3/5) – Meaningful shadow
Secret image
Cover image
good PSNR
good SSIM

8. Preliminaries(4/5) – No pixel expansion
Cover image
Secret image
Preserve system performance

9. Preliminaries(5/5) – Verification
Cover image
Result of shadows
3 shadows
LSB
Integrity
4 shadows
5 shadows

10. Proposed mechanism(1/5) - Sharing
(3, 5)
1000 Pixel
600 Pixel
200 Pixel

11. Proposed mechanism(2/5) - Sharing
(3, 5)
(4, 5)
(5, 5)
290 Pixel
600 Pixel
200 Pixel
200 Pixel
(10,15,20)
(1, 45)
(2, 120)
(3, 235)
(5, 83)
(4, 139)

12. Proposed mechanism(3/5) - Embedding
290 Pixel
2500 Pixel

13. Proposed mechanism(4/5) – Decrypting and verification
(3, 5)
290 Pixel
2500 Pixel

14. Proposed mechanism(5/5) – Decrypting and verification
(3, 5)
3 shadows
4 shadows
(1, 45)
(2, 120)
(3, 235)
5 shadows

15. Experimental results and analysis(1/3)
(3, 5)
[7] Lee JS, Chen YR (2017) Selective scalable secret image sharing with verification. Multimedia Tools Application 76(1):1–11
[15] Yang CN, Chu YY (2011) A general (k, n) scalable secret image sharing scheme with the smooth scalability. J Systems and Software 84(10):1726–1733
[16] Yang CN, Huang SM (2010) Constructions and properties of k out of n scalable secret image sharing. Optics Communications 283(9):1750–1762

16. Experimental results and analysis(2/3)
PSNR
SSIM
[7] Lee JS, Chen YR (2017) Selective scalable secret image sharing with verification. Multimedia Tools Application 76(1):1–11
[9] Lin CC, Tsai WH (2004) Secret image sharing with steganography and authentication. J Systems and Software 73(3): 405–414
[17] Yang CN, Chen TS, Yu KH, Wang CC (2007) Improvements of image sharing with steganography and authentication. J Systems and Software 80(7):1070–1076

17. Experimental results and analysis(3/3)

18. Conclusions
Smooth scalability
Selectivity
Higher PSNR and SSIM

19. Thanks
For listing